package com.example.demo.utils;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
public class WebMvcConfiguration extends WebMvcConfigurerAdapter {
    @Value("${upload.path}")
    private String uploadPath;

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //addResourceHandler是指你想在url请求的路径
        //addResourceLocations是图片存放的真实路径
        registry.addResourceHandler("/file/**").addResourceLocations("file:"+uploadPath);
        super.addResourceHandlers(registry);
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(authenticationInterceptor())
                .addPathPatterns("/**");    // 拦截所有请求，通过判断是否有 @LoginRequired 注解 决定是否需要登录
    }

    @Bean
    public AuthenticationInterceptor authenticationInterceptor() {
        return new AuthenticationInterceptor();
    }
}
